Direct Integration with REST API

CrossCurve MetaLayer API enables cross-chain token swaps across various networks.

Base URL

CrossCurve MetaLayer API is built on REST principles and is served over HTTPS.

https://api.crosscurve.fi

Authentication

Protected endpoints (/routing/*, /pimlico/*, /networks) require an api-key header.

api-key: YOUR_API_KEY

Rate Limits

Tier	Limit
standard	60 req/min
free	20 req/min

EOA Swap

A standard wallet swap (MetaMask, WalletConnect, or any EOA signer) in six steps:

1. Fetch supported networks and tokens

2. Find a route

3. Approve token spending (ERC-20 only)

4. Send swap transaction

5. Extract requestId from receipt

6. Poll for completion